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(Model.) 2 Sheets-Sheet 2 0.?" OARLOGK & 0.11. DAVIDS.

BOOK ADJUSTER A'ND SUPPORTBB.

No. 274,719. Patented Mar.27,188 3.

UNITED STATES PATENT OFFICE.

CHARLES F. GARLOCK, OF NEW YORK, AND CHARLES H. DAVIDS, OF BROOK- LYN, N. Y., SAID DAVIDS ASSIGNOR TO SAID GARLOGK.

- BOOK ADJUSTE R AND SUPPORTER.

SPECIFICATION forming part of Letters Patent No. 274,719, dated March 27, 1883.

Applieationfiled July 10,1882. (Model.)

To all whom it may concern.-

' Be it known that we, CHARLES F. (JAR- Loox and CHARLES H. DAVIDS, citizens of the United States,.and residing respectively in the cities of New York and Brooklyn, in the State of New York, have invented a new and useful Book Adjuster and Supporter, of which .the following is a specification.

Our invention is especially useful for account-books, and is intended to supersede the present usual method of supporting their sides, when they are open, with other books, paperweights, and miscellaneous articles of deskfurniture. These make-shifts being often required for their legitimate use, the frequent changes thus necessitated cause no. small de gree of vexatious annoyance to accountants, besides loss of time and greater probability of errors. Furthermore, they are adjustable as to height only by the tedious plan of increasing or decreasing their number, while, even if they could conveniently be employed for the purpose specified, their cost would be much.

greater than that of devices specially designed for the purpose as invented by us.

In using our invention an adjuster is attaohed to-each side of the cover of an open book, and remains there until taken off. When so attached it cannot drop off the desk, and ifthe book to which it is attached is moved the adjuster moves with it. It can be quickly attached to book-covers of difl'erent thicknesses, and permits of instantaneous adjustment for height. As no part of it projects above the leaves of the book, it permits the free use of a ruler across the pages.

It is evident that the mechanism which might be used admits of several modifications;

:but we deem the one which we have shown in the drawings to be the most simple and perfect method of adapting the invention to the purpose specified.

This invention should not be classed with book supports or rests intended for readers use, and designed to support the whole book,

this device being intended simply to support aside of an open book while the back of the book rests on the desk or table on which it is lying; and we do not claim any application-of our invention inconsistent with the purpose herein specified.

In Figure l in the drawings the invention is shown in elevation, and a section of one side of a book to which the adjuster is attached is shown in dotted lines. In Fig. 2 the device is shown in perspective.

The clamp O is formed of the spring .9 and platform I, the former being sprung upon and removably secured to the latter in sockets formed upon its lower surface, as shown, and the latter being attached to the standard S by a hinge-joint, J. The spring 8 is formed in such a manner that it will afford an extended bearing upon the face of the platform, and this extended bearing will not be materially affected by the thickness of the book clamped. The standard S, which is movable vertically in the base B, has notches cut in its surface, in which the click or detent D engages to hold it and the clamp and book side at different heights. A spring, 8, holds the upper end of the detent D against the standard S.

In using the invention the clamp c is ,attached to the book-cover, as shown. Simply lifting the side of the book raises it to the required height. To lower it a slight pressure on the outer end of the detent D leaves the standard free to drop as far as may be necessary. Two small lugs on one end of the up per face of the platform P act as stops, against which the book-lid squarely abuts. The opposite end of the platform P is beveled so as to form a guiding-lip, to facilitate the introduction of the book-lid.

What we claim as new and as our invention,

and desire to secure by Letters Patent, is-

l. A book-support having a clamp composed of a platform and a spring, the latter having an extended bearing-surface upon the face of the platform passing around the edge of and under the platform, and secured upon its under surface at or near its center, whereby the clamp will adjust itself to various angles and thicknesses without changing the said bearing, as set forth. V

2. A book support having a clamp composed of a vertically-adjustable hinged platwithout changing the said bearing, and may form and a spring, s, the latter having a flat be readily removed, as set forth.

bearing-surface passing around the edge of CHARLES F. OARLOOK.

and under the platform, and removably se- CHARLES H. DAVIDS. 5 cured in sockets upon its under surface at or Witnesses:

near its center, whereby the clamp will ad- JOHN I. DONAHUE,

just itself to various angles and thicknesses THOS. KILVERT. 

